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논문 기본 정보

자료유형
학술저널
저자정보
김성한 (군산대학교)
저널정보
한국수산해양교육학회 수산해양교육연구 수산해양교육연구 제30권 제1호(통권 제91호)
발행연도
2018.2
수록면
1 - 9 (9page)
DOI
10.13000/JFMSE.2018.02.30.1.1

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초록· 키워드

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Sex ratios of juveniles hatched by artificial incubation at room temperatures from 67 eggs collected by the abdominal caesarean operation of six turtles, Trionyx sinensis were investigated, and required incubation days for hatching were calculated. In this study, tail lengths in females were shorter than those in males. From the beginning of hatching to final hatching, it was maintained at the maximum high temperatures (41±1.0℃ for one day at the 29th days) at room temperatures and then changed the minimum low temperatures (21.5±1.0℃ at the 48th days). In this study, the average room temperature artificial incubation ranged 30.4~30.8±1.0℃ per individual. Artificial natural nests were produced by commercial plastic box and were filled with large quantities of fine sands. Required incubation days for hatching of 24 eggs ranged from 53 to 58 days. The hatching rates ranged from 22.2% to 58.3%. At this time, 47 of total 67 individuals were damaged by heat. The low hatching rate showed considerably. Commonly, in case of most turtles in reptiles, incubation at 31℃ (higher temperatures) generally produced all or mostly females, while incubation at 25℃ (cooler temperatures) produced all or mostly males. However, in case of the genus Trionyx (the Korean turtle (T. sinensis) and U.S.A. turtle (T. spiniferus), the sex ratios of females and males produced approximately 1:1 independently most incubation temperatures. In this study, the sex ratios of juveniles hatched by artificial incubation at room temperatures of the Korean turtle, T. sinensis showed the same results, as seen in U.S.A. turtle (approximately 1:1), which differs from other genera turtles. This species showed that "temperature has no effect on sex determination", it may be influenced by gene variation and a certain adaptation.

목차

Abstract
Ⅰ. 서론
Ⅱ. 재료 및 방법
Ⅲ. 결과 및 고찰
Ⅳ. 결론
References

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UCI(KEPA) : I410-ECN-0101-2018-454-001769209